n | a(n) |
---|---|
6 | 1 |
7 | 13 |
8 | 110 |
9 | 758 |
10 | 4617 |
11 | 25895 |
12 | 136949 |
13 | 693369 |
14 | 3395324 |
15 | 16197548 |
16 | 75675657 |
17 | 347624505 |
18 | 1574756959 |
19 | 7051383905 |
20 | 31266981002 |
21 | 137492793602 |
22 | 600295660953 |
23 | 2604690331787 |
24 | 11240698270037 |
25 | 48279130088017 |
26 | 206486210282936 |
27 | 879807455701208 |
28 | 3736101981855305 |
[1,13,110,758,4617,25895,136949,693369,3395324, 16197548,75675657,347624505,1574756959,7051383905, 31266981002,137492793602,600295660953, 2604690331787,11240698270037,48279130088017, 206486210282936,879807455701208,3736101981855305] |